US20110142980A1 - Drive device for driving a closing plate in a vertical mould casting machine and machine comprising said device - Google Patents

Drive device for driving a closing plate in a vertical mould casting machine and machine comprising said device Download PDF

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Publication number
US20110142980A1
US20110142980A1 US13/057,655 US200813057655A US2011142980A1 US 20110142980 A1 US20110142980 A1 US 20110142980A1 US 200813057655 A US200813057655 A US 200813057655A US 2011142980 A1 US2011142980 A1 US 2011142980A1
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United States
Prior art keywords
closing plate
displacement
casting
transmission means
driving
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Abandoned
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US13/057,655
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English (en)
Inventor
Shanti Gafarsoro Urrestilla
Francisco Javier Calvo Poza
Eneko Sanchez Jimenez
Mikel Bikandi Bikandi
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Loramendi S Coop
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Loramendi S Coop
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Application filed by Loramendi S Coop filed Critical Loramendi S Coop
Assigned to LORAMENDI, S.COOP. reassignment LORAMENDI, S.COOP. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BIKANDI BIKANDI, MIKEL, CALVO POZA, FRANCISCO JAVIER, GAFARSORO URRESTILLA, SHANTI, SANCHEZ JIMENEZ, ENEKO
Publication of US20110142980A1 publication Critical patent/US20110142980A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/10—Moulding machines characterised by the relative arrangement of the parts of same with one or more flasks forming part of the machine, from which only the sand moulds made by compacting are removed

Definitions

  • the invention is comprised in the field of vertical mould casting machines, and it has been improved to achieve a production increase as a result of a work cycle time reduction, as well as better compacting of the casting.
  • Vertical sand mould casting machines comprise a generally rectangular moulding chamber in which the sand is blown through a hopper or bell arranged at the top. Said chamber is closed by means of two closing plates, closed at one end by a front, moving and swinging plate which allows the exit of the moulded casting, while the other end is closed by a rear plate associated to a compacting piston, which is also used to push on the casting and expel it in order to place said casting on the stack of previously produced castings.
  • the casting is obtained by blowing sand in the chamber, followed by compacting the sand by means of the opposing pushing of the front and rear plates. After this the front plate is opened and swiveled to allow the casting to exit, which is achieved by pushing with the rear plate, extracting the casting from the moulding chamber and placing it against the previously obtained stack of castings.
  • patent EP 1 219 830 describes vertical mould casting machine in which once the sand has been blown into the moulding chamber, the compacting is performed by the front and rear plates due to the opposing drive of two hydraulic cylinders, which push the front and rear plates to form the casting in the moulding chamber.
  • the opening, closing and compacting movements are achieved by means of two hydraulic cylinders acting in opposition.
  • the drive of one of the cylinders, in a first direction, displaces the rear plate for compacting and extracting the casting.
  • the other cylinder is operated in a direction opposite to the first cylinder, acting on a rear frame which, through a series of bars, is attached to the front plate, displacing the front plate for compacting and swiveling.
  • the casting is pressed by means of the opposing and simultaneous drive of the cylinder pushing the rear plate and of the cylinder pushing the front plate, thus forming the casting in the moulding chamber.
  • the cylinder of the front plate reverses its operation, causing the longitudinal and outwards displacement of the frame and therefore of the front plate.
  • the cylinder of the rear plate continues its movement aiding the extraction of the casting.
  • a cam will swivel upwards pushing on a rod and therefore pushing and swiveling the front plate. This swiveling motion continues until the front plate is in a horizontal position at the top, in which position the casting may be extracted by the pushing action of the rear plate, which plate is driven and displaced longitudinally by the cylinder of the rear plate.
  • hydraulic cylinders As driving devices of the closing plates, good compacting of the casting is obtained, however there are many other drawbacks derived from the use of hydraulic cylinders, such as for example, high maintenance cost, need for large surfaces to place the cylinders, which considerably increases the size of the machine, low pressure in the movements of the cylinders, greater power consumption, etc.
  • the object of the present invention is to achieve the displacement of a (front or rear) closing plate and, therefore quicker compacting of the casting, while at the same time seeking quicker swiveling of the front plate and extraction of the casting than what is achieved with purely hydraulic systems.
  • the invention relates to a drive device for driving a closing plate in a vertical mould casting machine, the mentioned machine comprising displacement means for displacing the closing plate to compact casting and for extracting it from the moulding machine.
  • the displacement means for displacing the closing plate comprise:
  • the first speed is a slow speed with which a controlled compacting is sought by slowly displacing either the rear plate or the front plate towards the moulding chamber, very precise movements and a large compacting force thus being obtained.
  • the second speed is a quick speed with which a quick movement for swiveling or extracting the casting, depending on the plate on which the device object of the invention is acting, is sought.
  • the second displacement with the second speed is intended to quickly swivel the front plate or quickly push the rear plate and thereby quickly extract the casting.
  • the drive device can be a simple drive device or a mixed drive device.
  • the drive means can be at least one motor, whereas the transmission means can be chosen from different options, such as at least one screw-nut or at least one rack-pinion.
  • the need to use one or more motors will depend on the power required by the system.
  • the use of one or more nuts-screws or one or more pinions-racks will depend on the needs of each system.
  • This drive device can be used to drive a rear plate, a front plate or to actuate the two plates. If the drive device is going to be applied to both plates, the plates can have the same transmission means or they can be different. For example, each of the plates can be driven by screw-nut transmission means or by rack-pinion transmission means, or the front plate can be driven by screw-nut transmission means and the rear plate by rack-pinion transmission means, or vice versa.
  • the first displacement is configured to compact the casting, i.e., to displace the front plate towards the moulding chamber and the second displacement is configured to swivel the mentioned front plate and aid in extracting the casting.
  • the first and second displacements are in opposite directions.
  • the first displacement is configured to compact the casting, i.e., displace the rear plate towards the moulding chamber and the second displacement is configured to extract the mentioned casting, i.e., to push the casting to the stack of previously obtained castings.
  • the first and second displacements are in the same direction.
  • the drive device can be mixed and, therefore, the transmission means can comprise first transmission means to transmit the first displacement and second transmission means to transmit the second displacement.
  • the first displacement is carried out with a first speed, slow speed
  • the second displacement is carried out with a second speed, quick speed.
  • the slow speed serves to transmit power to the closing plate to carry out good compacting and the quick speed allows swiveling the closing plate if the device acts on a front plate, or extracting the casting if the device acts on a rear plate.
  • the drive means can in turn comprise first drive means for driving the first transmission means and second drive means for driving the second transmission means.
  • the first and second transmission means can be arranged coaxially.
  • the second transmission means can be linked to a first end of the closing plate and the first transmission means can be arranged between a fixed part, which is fixed to the frame of the vertical mould casting machine, and to a second end of the second transmission means. Therefore when the first transmission means are driven, the first displacement with the first speed occurs, i.e., the first transmission means pushing the second transmission means are displaced, causing the closing plate to move towards the moulding chamber, compacting the casting.
  • the second transmission means cause the second displacement of the closing plate with the second speed, i.e., they cause the quick swiveling of the closing plate or the quick displacement of the plate to extract the casting.
  • the second transmission means can be joined directly to a first end of the closing plate to cause the second displacement. They can also incorporate a frame joined to a first end of the closing plate, such that the movement of the second transmission means displaces the frame, which in turn pushes the closing plate.
  • the first and second transmission means can be selected from at least one rack-pinion, at least one screw-nut, at least one connecting rod-crank and at least one hydraulic cylinder, whereas the first and second drive means can comprise at least one electric motor.
  • first transmission means are a screw-nut and the second transmission means are a rack-pinion.
  • the device object of the invention can be used to drive a front plate or a rear plate or both plates.
  • the first displacement is configured to compact the casting and the second displacement is configured to swivel the front plate and aid in extracting the casting.
  • the casting is compacted by means of the screw-nut, since the screw provides the necessary force to compact the casting and the front plate is swiveled by means of the rack-pinion which provides high speed.
  • the first displacement is configured to compact the casting, i.e., displace the plate towards the moulding chamber
  • the second displacement is configured to quickly extract the casting, i.e., displace and position the casting in the stack of previously obtained castings. If a screw-nut and rack-pinion drive is used, the compacting is carried out by means of the screw-nut and the extraction by means of the rack-pinion.
  • the drive means can comprise a support, which can serve to support the electric motor.
  • the first and second transmission means can comprise a frame, which in turn can comprise a support for the drive means.
  • object of the invention is a vertical mould casting machine comprising the previously described drive device.
  • FIG. 1 shows the device object of the invention in which a simple rack-pinion type drive has been used.
  • FIG. 2 shows the operating sequence of the device of FIG. 1 in which the rear plate has been depicted.
  • FIG. 3 shows the device object of the invention using a simple screw-nut type drive.
  • FIG. 4 shows the operating sequence of the device of FIG. 3 , in which the rear plate has been depicted.
  • FIG. 5 shows the device object of the invention using a mixed screw-nut and rack-pinion type drive.
  • FIG. 6 shows the operating sequence of the device of FIG. 5 in which the rear plate has been depicted.
  • FIG. 7 shows the device object of the invention using a mixed connecting rod-crank and screw-nut type drive.
  • FIG. 8 shows the operating sequence of the device of FIG. 7 in which the rear plate has been depicted.
  • FIG. 9 shows the device object of the invention using a mixed hydraulic cylinder and screw-nut type drive.
  • FIG. 10 shows the operating sequence of the device of FIG. 9 in which the rear plate has been depicted.
  • FIG. 11 shows the device object of the invention using a mixed hydraulic cylinder and rack-pinion type drive.
  • FIG. 12 shows the operating sequence of the device of FIG. 11 in which the rear plate has been depicted.
  • FIG. 1 shows a vertical mould casting machine using a drive device comprising a rack-pinion ( 51 , 51 ′).
  • the rack-pinion ( 51 ′) acting on a front plate ( 1 ) is joined by a first end to a fixed part ( 3 ), which is fixed to the frame of the moulding machine, and the rack-pinion ( 51 ) acting on a rear plate ( 2 ) is joined in an opposing manner to the mentioned fixed part ( 3 ), such that the movement of the rack-pinion ( 51 ′) and the movement of the rack-pinion ( 51 ) are in opposite directions.
  • the pinion rack ( 51 ) thus displaces the rear plate ( 2 ) towards the moulding chamber ( 4 ) in one direction and with a slow speed, and the rack-pinion ( 51 ′) pushes a displaceable frame ( 9 ) joined to the front plate ( 1 ) by a series of bars ( 10 ), displacing the front plate ( 1 ) towards the chamber ( 4 ) in an opposite direction and with an also slow speed.
  • the two plates close the moulding chamber ( 4 ), compacting the casting.
  • the rear plate ( 2 ) continues to be displaced but at a higher speed than the first, whereas the front plate ( 1 ) is quickly retracted and swiveled, allowing the extraction of the casting.
  • the movements of the rack-pinion ( 51 ) and the pinion rack ( 51 ′) are in opposite directions, whereas during the extraction of the casting, the movements of the rack-pinion ( 51 and 51 ′) are in the same direction.
  • the transmission means go back to their initial position, performing a reverse movement from that described for compacting the casting.
  • FIG. 2 shows the operating sequence with transmission means comprising a rack-pinion ( 51 ) for displacing the rear plate ( 2 ).
  • the motor of the rack is arranged in a support ( 512 ) and displaces the rack ( 511 ) through the pinion ( 513 ) by means of a slow movement with which the rear plate ( 2 ) is displaced towards the chamber ( 4 ), and therefore the casting is compacted. Then the motor, with a second speed quicker than the first, displaces the plate ( 2 ) and thereby extracts and places the casting in the stack of previously obtained castings. Both the slow speed and quick speed are provided by the mentioned motor either directly or by means of a gear.
  • FIG. 3 shows a vertical mould casting machine with screw-nut transmission means ( 61 ) acting on the rear plate ( 2 ) and screw-nut transmission means ( 61 ′), acting on a front plate ( 1 ).
  • the screw-nut ( 61 ) drive of the rear plate ( 2 ) and the screw-nut ( 61 ′) drive of the front plate are joined in an opposite manner to the fixed part ( 3 ).
  • the screw-nut ( 61 ) thus displaces the rear plate ( 2 ) towards the moulding chamber ( 4 ) in one direction and with a slow speed and the screw-nut ( 61 ′) displaces the front plate ( 1 ) towards the chamber ( 4 ) in an opposite direction and with an also slow speed, thus compacting the casting.
  • the rear plate ( 2 ) continues to be displaced but at a much higher speed than the first, whereas the front plate ( 1 ) is quickly retracted and swiveled, allowing the extraction of the casting.
  • the transmission means ( 61 ) comprise a frame ( 613 ), comprising the nut ( 614 ) which is moved by the screw ( 611 ) and the rear part of the rear plate ( 2 ), such that when the screw ( 611 ) rotates, the mentioned frame ( 613 ) is longitudinally displaced, pushing the rear plate ( 2 ) towards the moulding chamber ( 4 ) and thus compacting the casting.
  • the motor provides a quick movement and the frame ( 613 ) is displaced, driven by the screw ( 611 ), pushing the rear plate ( 2 ), and therefore the already compacted casting, towards the stack of castings.
  • front ( 1 ) and rear ( 2 ) plates could also be driven by different transmission means, i.e., the front plate could be driven by a screw-nut and the rear plate ( 2 ) could be driven by a rack-pinion and vice versa.
  • FIG. 5 shows a mixed drive, i.e., made up of first transmission means and second transmission means
  • the first means can be a screw-nut ( 62 , 62 ′) and the second means a rack-pinion ( 52 , 52 ′).
  • the first transmission means i.e., the screw-nut ( 62 , 62 ′)
  • the second transmission means i.e., the rack-pinion ( 52 , 52 ′
  • the transmission means acting on the rear plate ( 2 ) are arranged in a manner opposite to the transmission means acting on the front plate ( 1 ).
  • the screw-nut ( 62 ) is thus joined to the fixed part ( 3 ) and the screw-nut ( 62 ′) is joined in the opposite manner to the mentioned fixed part ( 3 ). Then the rack-pinion ( 52 , 52 ′) is arranged coaxially to the screw-nut ( 62 , 62 ′).
  • FIG. 6 shows the operating sequence of the rear plate ( 2 ).
  • the motor of the screw rotates the screw ( 621 ) through the crown ( 622 ), transmitting slow movement to the rack-pinion ( 52 ) through the nut ( 624 ) comprised by the frame ( 623 ). With this slow movement, the rear plate ( 2 ) is pushed and therefore the casting is compacted.
  • the motor of the rack is actuated, transmitting movement to the rack ( 521 ) through the pinion ( 523 ), in order to quickly displace the rear plate ( 2 ), i.e., expel the casting towards the stack of castings.
  • the motor of the rack can be mounted on the frame ( 623 ) or on an independent support, or it can be mounted on the bed plate of the machine itself.
  • FIG. 7 depicts a mixed drive for each of the plates, in which the first transmission means comprise a connecting rod-crank ( 72 , 72 ′) and the second transmission means comprise a screw-nut ( 62 , 62 ′).
  • the connecting rod-crank ( 72 , 72 ′) and the screw-nut ( 62 , 62 ′) of each of the plates are arranged coaxially, such that the connecting rod-crank ( 72 , 72 ′) is joined to the fixed part ( 3 ) and then the screw-nut ( 62 , 62 ′) is arranged, which has coupled thereto a frame ( 623 ) that is joined to the rear plate ( 2 ) and a frame ( 623 ′) that is joined to the front plate ( 1 ).
  • the first and second transmission means associated to the rear plate ( 2 ) act in a manner opposite to the first and second transmission means of the front plate ( 1 ).
  • FIG. 8 shows the operation of this type of mixed drive.
  • FIG. 9 shows a vertical mould casting machine using a mixed drive device for each of the plates, in which the first transmission means comprise a hydraulic cylinder ( 82 , 82 ′) and the second transmission means comprise a screw-nut ( 62 , 62 ′).
  • These transmission means are arranged coaxially such that the hydraulic cylinder ( 82 , 82 ′) is joined to the fixed part ( 3 ), and then the screw-nut ( 62 , 62 ′) is arranged, which screw-nut comprises a frame ( 623 , 623 ′) integral to the same, which is joined to the rear plate ( 2 ) or to the front plate ( 1 ) through the displaceable frame ( 9 ).
  • FIG. 10 The operating sequence for a rear plate ( 2 ) is depicted in FIG. 10 .
  • the hydraulic cylinder ( 821 ) is activated, slowly displacing the screw-nut ( 62 ), which pushes the rear plate ( 2 ), compacting the casting.
  • the motor of the screw not depicted in the figures, rotates the screw ( 621 ) through the crown ( 622 ), quickly displacing the frame ( 623 ) integral to the nut ( 624 ) pushing the rear plate ( 2 ) and thereby extracting the casting.
  • FIG. 11 depicts a mixed drive for each of the plates in which the first transmission means comprise a hydraulic cylinder ( 82 , 82 ′) and the second transmission means comprise a rack-pinion ( 52 , 52 ′).
  • the hydraulic cylinder ( 82 ) and the rack-pinion ( 52 ) are arranged in a manner opposite to the cylinder ( 82 ′) and to the rack-pinion ( 52 ′).
  • the hydraulic cylinder ( 82 , 82 ′) is joined to the fixed part ( 3 ) and the rack-pinion ( 52 , 52 ′) is coaxially arranged.
  • FIG. 12 depicts the operating sequence of the rear plate ( 2 ).
  • the activation of the hydraulic cylinder ( 821 ) causes the displacement of the rack-pinion ( 52 ), and in turn of the rear plate ( 2 ) compacting the casting.
  • the rack ( 521 ) is subsequently driven through its pinion ( 523 ) in order to quickly displace the rear plate, and thereby extract the casting.
  • the rack-pinion ( 52 ) moves back to the position of contact with the hydraulic cylinder ( 821 ); after this moment the rack-pinion ( 52 ) and the hydraulic cylinder ( 821 ) simultaneously go back until the reach the initial position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Devices For Molds (AREA)
US13/057,655 2008-08-07 2008-08-07 Drive device for driving a closing plate in a vertical mould casting machine and machine comprising said device Abandoned US20110142980A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2008/000551 WO2010018238A1 (es) 2008-08-07 2008-08-07 Dispositivo de accionamiento de un plato de cierre en una máquina de moldeo vertical de motas y máquina que comprende dicho dispositivo

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US20110142980A1 true US20110142980A1 (en) 2011-06-16

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US13/057,655 Abandoned US20110142980A1 (en) 2008-08-07 2008-08-07 Drive device for driving a closing plate in a vertical mould casting machine and machine comprising said device

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US (1) US20110142980A1 (ja)
EP (1) EP2324941B2 (ja)
JP (1) JP5260743B2 (ja)
KR (1) KR101352226B1 (ja)
CN (1) CN102170982A (ja)
BR (1) BRPI0823026B1 (ja)
DK (1) DK2324941T4 (ja)
ES (1) ES2636953T5 (ja)
MX (1) MX2011001350A (ja)
PL (1) PL2324941T5 (ja)
RU (1) RU2481173C2 (ja)
WO (1) WO2010018238A1 (ja)
ZA (1) ZA201101694B (ja)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
US20110195143A1 (en) * 2010-02-10 2011-08-11 Loramendi, S.Coop Mote molding machine
CN102514090A (zh) * 2011-12-06 2012-06-27 惠达卫浴股份有限公司 一种改进的陶瓷微压成型立浇线

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CN104149186B (zh) * 2014-08-18 2016-03-30 济南建源机械制造有限公司 自动化构件翻转脱模机

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110195143A1 (en) * 2010-02-10 2011-08-11 Loramendi, S.Coop Mote molding machine
US8956148B2 (en) * 2010-02-10 2015-02-17 Loramendi, S. Coop Mote molding machine
CN102514090A (zh) * 2011-12-06 2012-06-27 惠达卫浴股份有限公司 一种改进的陶瓷微压成型立浇线

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ES2636953T5 (es) 2020-10-20
CN102170982A (zh) 2011-08-31
BRPI0823026A2 (pt) 2015-07-28
EP2324941B1 (en) 2017-05-10
ES2636953T3 (es) 2017-10-10
EP2324941A1 (en) 2011-05-25
KR20110040976A (ko) 2011-04-20
PL2324941T5 (pl) 2020-07-13
PL2324941T3 (pl) 2017-10-31
DK2324941T3 (en) 2017-08-28
DK2324941T4 (da) 2020-05-18
ZA201101694B (en) 2012-05-30
JP5260743B2 (ja) 2013-08-14
RU2481173C2 (ru) 2013-05-10
JP2011529796A (ja) 2011-12-15
KR101352226B1 (ko) 2014-01-15
MX2011001350A (es) 2011-05-30
WO2010018238A1 (es) 2010-02-18
BRPI0823026B1 (pt) 2017-10-24
RU2011108575A (ru) 2012-09-20
EP2324941B2 (en) 2020-02-19

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